Gemstone



FIG. 1 is a top view;

FIG. 2 is a bottom view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view, partially rotated with respect to first side view thereof;

FIG. 5 is an upper perspective view thereof; and,

FIG. 6 is a lower perspective view thereof. 

The ornamental design for a gemstone, as shown. 